ubuntu18.04安装opencv-4.5.5+opencv_contrib-4.5.5-优快云博客

本文链接：https://blog.youkuaiyun.com/OEMT_301/article/details/134885987

本文详细指导如何在Ubuntu系统上安装OpenCV4.5.5，包括安装依赖库、配置CMake、设置LD_LIBRARY_PATH和bash环境变量，以及针对不同架构的编译命令。

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一、安装opencv依赖

sudo apt-get install build-essential 
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

如遇libjasper-dev（E: 无法定位软件包 libjasper-dev
）报错，执行如下指令

sudo add-apt-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt upgrade
sudo apt install libjasper1 libjasper-dev

opencv下载链接 opencv_contrib下载链接
解压opencv-4.5.5和opencv_contrib-4.5.5，并将解压后的放到opencv-4.5.5文件夹下

opencv-4.5.5
	|__build
	|__opencv_contrib-4.5.5

二、在opencv-4.5.5文件夹下新建build

cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/opt/opencv-4.5.5 \			# 制定自己的安装路径
    -D OPENCV_GENERATE_PKGCONFIG=ON .. \
    -D OPENCV_EXTRA_MODULES_PATH=/xxxx/opencv-4.5.5/opencv_contrib-4.5.5/modules ..
make -j8
sudo make install

三、在/etc/ld.so.conf中添加配置

sudo gedit /etc/ld.so.conf

在文件最后添加

/usr/local/lib

执行

sudo ldconfig

四、修改bash.bashrc文件

sudo gedit /etc/bash.bashrc

在文件最后添加

PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgconfig
export PKG_CONFIG_PATH

执行

source /etc/bash.bashrc

五、安装完测试

/xxx/opencv-4.3.0/samples/cpp/example_cmake
cmake .
make
./opencv_example

不同架构下编译命令

cmake -DCMAKE_OSX_ARCHITECTURES='armv7;arm64;x86_64' ..